* Throttle Position Sensor (TPS): The TPS is a sensor that tells the engine control unit (ECU) how far the throttle is open. If the TPS is faulty, it can send incorrect signals to the ECU, which can cause the cruise control to surge.
* Vacuum Leak: A vacuum leak can cause the engine to run lean, which can also cause the cruise control to surge.
* Fuel Injector: A faulty fuel injector can also cause the engine to run lean, which can lead to cruise control surging.
* Cruise Control Module: The cruise control module is the brains of the cruise control system. If the module is faulty, it can cause the cruise control to surge.
It is important to note that these are just possible causes and the actual cause of the surging may be something else. If you are experiencing this problem, it is best to have the vehicle diagnosed by a qualified mechanic.
